Transmission-gearing for automobiles.



D. P. COLLINS. TRAHBEYSSON GEEIBG POR AUTGMOBILBS.

nruomlox Hmm we. 1. 1910.

Patented Jau 3,1911.

2 HHHETB-SHEBT 1.

D. P. COLLINS.

TBAHSHISSIN GEARING POB AUTOMOBILES.

nrmoulgx nun ma. 1, 1910.

Patented Jan 3, 1911.

:Pittsburg-g injgheeounty of Allegheny and Staieof Pennsylvania, have, invented certairifneivnndueeiul Improvements 1n T rensmission-GearingdorAutomobiles; and l do r y hereby=r-declerethe.jollowing t0 be a. furl, *eleur, endexaget description of the invention,

such qsivll-:eginbleothers skilled theartv.

:in speed changing ,endtransm'ssion gearing,

airdeis. des'gned particularly as. an improvee My present myentiox consists inthe ports andggoznbnetion Qtparts and in the details offfeonstnuctiones willbe more ullydescribedzarulfpointe'd. outinlthe claims...

In thegceo'mpanyingdrawings, Figare 1 reis azzviev; ertlycin vsectionemd partly in' elevation? owing-the two part axle, its sleeefxrzlmiien gearing and clutch operating mechgnism.' Figxis a .view 1u end elevation .olhe clutch actuating shaft, its

liever endzzrpertof one of the clutch oper-- atng'dfi rllfiig'. 3 is en .enlarged view in plata ,o-hesshat and its finger, the clutch operating-red and yielding lock forthe lattelfpandfig ga .View in side elevation orf 'thdprtsrfshewuin Eig-'3;

ltrepresents 'rtheg-rear' axle sleeve whichA carriesthe drivenfgeers of the series, and which smeuntedinthe cest steel housing 2, .x'vhiclulatenincloses-smd driven gears.

Theportons p-(the-sleeve embraced by thel sliding; clutches dhd54 are `angular 1n cross 40 Sectionywhile thefremnining parts arecylindrcal :and ,form bearingsior' Ythe several driven-V ersffr:

l Loose yernou'te oiiia cylindricalportidn iotfsleeve.lgv'-,the:revers/e gear -5, the hub of, .45 whichismountedandsup ,orted in the:

roller bearing 6.1:,.Theouter ace or endg of4 )Dngmsfnebnmna or PITTSBUURG;lrnnusnvnme.;esslenonno comme'- Y ....,fHAnUFAGTuBING ooM-PANYpoF mTcrsBUne-PENNSYLVAMA be disengaged from the clutch teeth'l? of disengaged, and when Aso disenga ed, runs 'loosely on the sleeve when the driving shaft is rotating. The clutch 3 is provided witha peripheral groove 9, 1n which pins carried bythe yoke 10 of the bell crank lever 1,1' rest, vVv'lien the lever 11 is shifted by itsH rod to be hereinafter referred to, its clutch 3 will be shifted laterally, thus locking gear clutch 3l ln the drawing the clutch is shown 3 5 to the sleeve 1. and transmitting motion from the drive Sheff; to the latter.

Loosely mounted on a cylindrical portio of sleeve 1,' is the fast speed gear 12, end mounted on the hub 18 of the latter is the hub of slow speed gear 14. This hub Of'the slow speed gear is also' mounted in the ant-i friction bearing 15, carried by the housing 2, and is provided at its outer 'end With inwardly projecting clutch teethadapted to; be engaged by the teeth of clutch 4, The" hub 13 of the fast speed'gear is also pro-Y vided at its outerV end with outwardly projecting teeth adapted to be engaged by teeth i ,on the clutch 4. The clutch sleeve'projects through the outer end of the. hubrof the slow speed Ygeen 14, and is providedat its outer r endjvith a groove 14"in which pins 15' car- `ried by the yoke 16 of the bell crank lever 17 rest. This clutch 4 is so constructed that the teeth'thereo may rest in a neutral po'- sition between the clutch teeth' of the speed -geers 12 and 14. and when so placed both gears will run loosely on their respective bearings.

By shifting the clutch. fl out@ wardly toward the slow Vspeed gear, the latter will be lockedto the sleeve and by now moving the clutch to the right, or toward the fest speed gear, the s ow :speed gear will be disconnected from the sleeve, and by continuing the movement of the clutch to' the right, the .fast'speed gaat Wm be cmi-thea t9 the Slee/ye.

single lever undiconnections, toy-b herein feel:A spe ith slow speed and reverse gears, and is located between the latter. By this arrangement, the fast, speed Gear is supported by the slow speed gear, and the latter is similarly supported by the anti-friction bearing 15.

18 is the drive shaft monted in the anti- A friction bearings'19, and supported at its inner end against a thrust bearing 20 carried by the housing 2. This shaft is inclosed the greater part of its length in the ixed sleeve or housing which carries one or more of the anti-friction bearings 19, and is provided with two iixed bevel pinions 21 and 22, the former of which is larger than l pinion 22, and meshes with the fast speed gear 12 while the smaller pinion 22 meshes with the reverse gear 5 and also with the slow speed gear 14. It will therefore be that the speed and reversegears-are directly driven, and all rotate when the driving shaft 18 isfrotating.

The sleeve 1 is hollow for the passage of the sections 23 of the axle, and each axle section is provided at its inner end with a bevel pinion 2l both of which are in engagement with the bevel pinion 25 mounted on' the journals 26 carried by the sleeve 1. The

interior of the sleeve is enlarged in linewith the driving shaft, for the reception of this differential gearing 24 and 25, and is made in two sections joined at such enlarged portion, hence when the differential gears are assembled, and the two sections of the sleeve secured together, the gears and their axles will be secured against the possi-bility of longitudinal displacement.

Mounted on a pintie 39 carried by Vthe housing 2 isthe idle pinion 40. This pinion may be of raw hide so as to render it practically noiseless', and it is designed to maintainthe two opposing pinions, the slow speed and reverse, in positive alinexnent with the driving pinions, and thus eliminate Vthe noise incidental to the springing apart from its neutral position shown in Fig. 1,'

into one of the longer slots of the quadrant, and will then be in a position where it can be moved rearwardly to reverse, or for- Wardly or rearwardly for slow or fast speed as may be desired. The shaft 27 carries two fixed collars 30 each of which is pro- Y vided with a projecting linger 3l resting in linewith slots 32 formed in the clutch operating rods 33. Theserode are preferas shown in Fig. l, the outer and shorter.

members of the rods being mounted in the elongated bearings 34, and provided at their cuter ends with their slots 32, while the longer members are connected at their rear ends to the bell crank levers 11 and 17.

As shown in Fig. 1, the fingers 31 are in their neutral positions, or the positions they occupy when lever 29 and the clutches 3and 4 are in their neutral positions. By 'now moving lever 29 to one side, say to the right, it will shift shaft 27 to the right and bring the finger 31 controlling the movement of clutch 3, into slot 32 in rod 33. By now moving lever 27 backwardly it will partly rotate shaft 27, and shift rod or pitman 33, cont-rolling clutch 3, forwardly, and move clutch 3 to the left and into mesh with the reverse gear If the lever 29 be now pushed forwardly, and shifted to the left, it will first ass to its neutral positionV thus disconnecting clutch 3. By continuing the movement to the left it will enter the lon e1' slot in the selective quadrant thus causing the other finger31, on shaft 27, to enter its slot in the rod or pitman 33, and by now moving the lever forwardly or rearwardly, clutch 4 will be shifted to lock the slow or fast speed gears to the sleeve 1. Y

With the construction thus far described, there is nothing to prevent the rods 33 from moving, or being moved vaccidentally when out ot engagement with their fingers 31 on shaft 27, and one of the principal ob'` `jects of this invention is to provide means for locking said. rods against movement when disconnected from shaft 27.

The means for locking the rods consists o` plate springs 35, one for each rod, Sefcured to the bearings 34 or other suitable support and each provided with a head 36 which, when the rods 33 are disengaged from the fingers 31, rests in the slots 32 in saidrods and thus locks the rods against movement. Y The heads 36 of these plate springs rest in line with the slots 32 when the latter are in their neutral position, and when the slots are free of the lingers 31, the elasticity of the springs carry said heads 36 into the-slots, thus forming positive locks for the rods 33. As the shaft 27 is moved longitudinally, sayto the right in order. to

throw 1n the reverse gear, the finger 31 moves into contact with head 36 and forces the slot 32 and as the rod. 33 is moved longi it, against the tension of its spring, out of Y tudinally A y the rocking movement of the shaft 27, the disen aged head simply slides against the side o its'rod. To disengage the fligertfrom the slot, the lever must be moved to .its neutral position and then move@ sidewise, and as 1t moves, the sha-'ft 27 also moves laterally, thusoa'rryingthe 31 ont of the slot. As the finger leaves the slot the spring of the plate forces the head into the slot and thus'positivciy locks the rod 33 against any accidental end- Wise movement. Secured to the opposite ends of the casing, are the sleeves 37 carry- `ing suitable journals for the axle sections and also brackets for the attachment ofthe car frame and braces, and the casings or housing for the brakes.

It is evident that many slight changes might be resorted to in the relative arrangeznere of parts shown and described without departing from the spirit and scope of my invention hence l would have it understood that do not wish to conline myself to the exactl construction and arrangement of parts shown and described, but, A

Having fully described my invention what l claim as new and desire to secure by Letters-Patent, is

l. vThe combination with a casing, a driving sleeve, and speed transmission gears the latter heing loosely mounted on the sleeve,

the said sleeve being embraced by the cas` ing, of axle sections mounted in the sleeve, diit'erential gearing housed within the sleeve and connecting the latter and the axle sections, a driving shaft, pinions thereon and meshing with the vtransmission gears and clutches for locking the latter to the sleeve.

2. The combination with a casing, a driving sleeve and speed transmission gears loose on the sleeve, of axle sections mounted in the sleeve, differential Jgearing connecting said sleeve and axle sections, a driving shaft, a pinion thereon meshing with the speed transmission gears, clutches for locking the transmission gears to the driving` sleeve, a sleeve secured to the casing anc inclosing the major portion of said driving shaft, and sleeves secured to the casing and inclosing the axle sections.

3. The combination with a casing, a driving sleeve therein and speed transmission gears loose on said sleeve, of a clutch for locking one gear to the sleeve, a second clutch for locking either of two gears to said sleeve, axle sections mounted in said sleeve, differential gearing housed within the sleeve and connecting the axle section to the sleeve` a driving shaft xed pinions thereon meshing with the gears on the sleeve,

and a lever and means connecting said lever l and clutches whereby either of the latter may be actuated.

4. The combination with a rilurality of transmission a p u'falitv of clutches, of a rod for actuating each clutch,

a sliding and rocking shaft, means on said' mi=sicn gears and a plurality of clutches,

of an actuating rod for each clutch, a. ding androcng shaft `having means for connecting it with said rods, the said connecting means 'being so located with relation to the rods that when the shaft is .connected to one rod it will be disconnected from the other, and means indeoendent of said sliding and rocking shaft or locking said rods when disengaged from the shaft- 6. The combination with' gear wheels, a'

plurality of clutches, an act-natia@ rod for eaclr clutch each rod being slotted near its free end, and a spring lock for each rod, the said locks normally resting in the slots in their respective rods, of a sliding and rocking shaft having a nger for each clutch rod, the said ngers being so located with relation to the rods that when one is in engagement with its rod, the other will be disengaged, and means for sliding and rockingthe shaft whereby either nver thereon may be moved to dislodge the llock of its rod and then engage the rod for actuating saine.

'i'. The combination with a driving sleeve, a housing for the same pinions loosely mounted on said sleeve, and clutches for locking the pinions to the sleeve, of a driving shaft, a drivin pinion thereon meshing with both of said loose pinions and an idle pinion mounted on a bearing carried by the housing and also meshing with said loose pinions. f

In testimony whereof, Ihave signed this specification in the presence of two subscribing witnesses.

DENNIS l). COLLINS. Witnesses G. TI. GERDING, H. 'WARD, JR. 

